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From: Nikos Vassiliadis <nvass@teledomenet.gr>
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Date: Thu, 6 Dec 2007 13:21:48 +0200
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Cc: Atrox <silver.salonen@gmail.com>
Subject: Re: enabling if_bridge STP
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On Thursday 06 December 2007 12:20:18 Atrox wrote:
> Well, as I understand, in my case, STP should be enabled mainly on
> TAP-interfaces as it would eliminate the scenario where, for an example,
> ARP-requests from 192.168.1.1 for 192.168.3.1 reach 192.168.2.1. Have I
> understood it correctly?

It sounds like you want to isolate the ethernets, not bridge them.
Bridging is not what you need, if I have understood correctly.

You want to keep ARP and broadcasts to the relevant boxes, right?
You have to use VLANs on your switch to achieve this, not bridging.

HTH, Nikos